| CAS No. | 321391-74-6 |
| Molecular Formula | C17H16ClN3O |
| Molecular Weight | 313.78 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Compared with other compounds in its class, the molecular weight of 313.78 g/mol gives 4-(4-Chlorophenyl)-1-(4-methoxyphenyl)-3-methyl-1H-pyrazol-5-amine distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
4-(4-Chlorophenyl)-1-(4-methoxyphenyl)-3-methyl-1H-pyrazol-5-amine (CAS 321391-74-6), molecular formula C17H16ClN3O and molecular weight 313.78 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C17H16ClN3O, 4-(4-Chlorophenyl)-1-(4-methoxyphenyl)-3-methyl-1H-pyrazol-5-amine contains a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 313.78 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 4-(4-Chlorophenyl)-1-(4-methoxyphenyl)-3-methyl-1H-pyrazol-5-amine meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
| Molecular Formula | C17H16ClN3O |
| Molecular Weight | 313.78 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |